Matt Cutts of Google has been posting dozens of videos, mostly on SEO topics, answering previously asked questions by SEOs like yourself. The videos can be seen at the Google Webmaster Help YouTube channel.
Matt is now asking you to submit new questions, because he hopes to produce more videos this Thursday to be posted throughout the next several weeks on the YouTube channel. In fact, Matt answered my question, when I asked if he would switch to a Mac. To submit your questions, go to Google Moderator and view and vote on questions, plus submit your own.